Clive,
It was supplied by PowerhausII Corp. in Fairfield IA (Tel. 641-469-3063).
Cost breakdown @ 2004 pricing was;
G50/52 gearbox & clutch package $9,000 inc. previously quoted ratios, HD billet shift fork for 1st/2nd, billet sidecovers and CMS billet side shift.
PHII new GT2 type chromoly LSD @ 80/80 lock = $2,195
Steel syncro package = $920
Adapter & flywheel package = $770 (Gen 1 Chevy small block)
Cheers,
Julian