Top End Swap ie Mounting an M90 to a GTthe list of required parts. Alot of the parts can be had from Ed Morad at GTPED@msn.com or your local junkyard or all new from various vendors. Location and vendors the price will vary. Figuere about $1500 for the swap.
Taken from the last page-
This is a list of everything you will need
M90
L67 idler pulleys,
L67 idler stand off,
L67 throttle body,
L67 injectors,
custom PCM,
GTP balancer,
L67 MAP sensor,
L67 heads,
L67 fuel rail,
2 head gaskets,
head studs (or head bolts)
MAP adaptor harness,
bypass valve wiring,
vacuum lines,
brake booster line,
supercharger gasket,
throttle body gasket,
lower intake gasket,
lower intake Orings,
supercharger belt,
GTP valve covers,
GTP valve cover gaskets,
coil pack bracket for 99+ cars,
lower intake from an L67,
M90 bolts,
and new rocker bolts.
gas requirements are 93 octane? whatever the premium in your area is rated at
More info can be found
here .