Hi ,bruce is correct ,I used a standard crossmember and changed the mounts .
Manufactured a G/Box x/member ,However i used a 260z box to get better ratios for hillclimbing .
A modified 620 ute diff 4.6 h190 ,a little heavy but never broke ,with just over 200HP.
Cut the original G/B mounts out because they vibrate like crazy. Also its preferable to use an auto shell if possible. I also used extractors(Datsun specials)Radiator you may get a silvia one in,i used a BMC kimberly radiator but they will be like rocking horse crap now cant think of much else Dennis

gday Dennis,
I remember seeing your 1200 coupe at Phillip Island. It was just awesome. It was one of the reasons I put an Lseries in my coupe, after seeing how well your car went.
Can you recall what you had done suspension wise?

got any pics of the car Dennis. I'd love to see it.