A repost from this thread:
http://www.mx-3.com/ubb/ultimatebb.php?ubb=get_topic;f=15;t=004266#000000
just installed my manual seatbelts today b/c my old drivers belt was shredding and I figured I'd just convert to manual belts anyways b/c the poewr belts are so annoying. I also weighed all the parts and figured out how much weight I saved.
First lemme write a checklist of what you need if you want to do this conversion.
Parts you need from donor car:
-Left & Right A pillar plastic trim
-Left & Right B pillar plastic trim
-Left & Right seatbelt reels w/anchors
-Left & Right seatbelt latchs off of both seats (important!!)
-Center console (the part that covers the Ebrake) WITH the bracket that holed it to the floor (this is important)
-Passenger side "O Sh** handle".
-Headliner
-cut peice of black carpet out from donor car (to cover where the lapbelt panels went)
I pulled my belts from a teal 95 RS which didn't have a sunroof, so I just reupholstered my headliner stretching the fabric around where the old A pilar trim covered. It looks fine and you can't tell. If you can find a 94-96 model with the proper headliner, you might as well pull it if you want it to look right. I have yet to get a center console b/c the one in the car I pulled my belts from was cracked and scratched up too much. I paid a total of $21 w/tax for all 4 trim peices, and both seatbelt assemblies.
Steps for removing your auto-seatbelts:
-A pillar trim
-B pillar trim
-rear lower panel (don't have to remove, just pop it out enough so you can get a wrench to remove the seatbelt assembly)
-power seatbelt reel assembly (1 x 16mm lower bolt, 1 x 10mm upper bolt for the assembly, then there are 2 8mm and 5 10mm holding the reel itself to the frame of the car)
-lapbelt reel (2 x philips screws & 2 x 17mm bolts)
-repeat these steps for other side
-remove center console (4 x philips screws)
-remove shoulder belt reels (2 x 12mm bolts)
-remove lower shoulder belt bracket (2 x 10mm nuts & 4 hex screws)
-remove power seatbelt brainbox under drivers seat(2 x 10mm bolts)
Instaling the new belts:
-bolt up seatbelt assembly behind rear panel first, then bolt the top anchor through the B pillar trim & finally bolt the lower anchor to the carpet (you will need to cut a peice out to do this)
-cover void where lapbelt reels were with carpet you cut out of donor car
-install headliner
-pop in B pillar trim
-pop in A pillar trim
Your done!!
Now for weight savings
Old belts weighed:
-Each reel/motor assmembly = 5.25 lbs.
-Each lapbelt reel assembly = 1.75 lbs.
-Center shoulder belt reels = 3.50 lbs. (together)
-Power seatbelt "brainbox" = 0.50 lbs.
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Total for both sides = 18 lbs.
New Belts weigh:
-Seatbelt assembly w/bolts and anchors (all one peice = 3 lbs. each
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Total for both sides = 6 lbs.
Total amount of weight savings: ~12 lbs. + the added perk of getting rid of those POS power belts!!