i did sfc by myself. just one reason was my car is going to have new paint tom so i don't want new paint to be crakced by poor body design by thirdgen.

anyway, making sfc to driver side is like driving a bike. all you need is some 60x30 squere profile tube, l-profile and mig.

i cutted 135cm of tube and placed under the car. rear end of the tube was around LCA and other end was around fender.

i bolted that piece with 3pcs 8x80 bolts to floor panel. looked nice. it came out maybe around 30mm from rocker panel.

i had 40x80 u-profile that i made from 40x80 l-profile to connect tube to LCA mounting bracket. that bite was 50mm long.

i made piece from same tube as sfc for connecting this wonderful sfc to front subframe under the car so i can't tell the measurent, but it was piece of cake. i just measure it and made it.

so diy sfc looked like L-letter with that small l-profile connecting sfc to LCA mounting bracket.

i welded those pieces together, bolted it on and welded it well.

my GTA doesn't have interior or plastic crap on right now, coz she's going to have new paint. but i can tell you the difference. ride was rock solid

once i got my hedmans and new exhaust i'll do the passenger side. and you'll know it with if you'd like to

thanks,

-P

PS. i have some digi pics if someone is intrested of driver side sfc

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Pontiac Trans Am GTA'89

CC1 GW6 G80 JG1 L98 MXO N64 WS6 822

mods: firebird '89 four spoke steering wheel and i'm still not running low 13's yet!