Some notes from my conversion:-
Yep - the right side lower control arm bolt will not go in (Gen3 Bathurst). Found out the hard way you need to lower the cross member to get the bugger in!!
Fuel line :- my 2GRFE came with the OE plastic push-in fitting to the fuel rail and a plastic locking clip so no mods to the fuel rail were required. I simply used 5/16" Goodyear fuel injection hose to connect to this. Aeroflow 6AN fittings with 5/16" barbs used on a Fuelab 515 regulator mounted where the MR2 coil used to be. The return hose runs to the existing MR2 hard line, which doesn't need any fittings at all apart from a clamp. Finally, a banjo fitting with 5/16 barb was used to a standard fuel filter (new one of course!). Good quality stainless steel clamps were used on all connections. I'm currently running 40 psi with an Aeromotive 11141 fuel pump which seems to run very quiet.
Gearbox: - I bought a banged up 1996 Camry Vienta with the 3vzfe V6 for $500 and removed the manual gearbox and flywheel. I had also bought MR2 Turbo hubs, drive shafts and gearbox (since I was starting with a NA Bathurst). A hybrid box was built using the bellhousing and internal gears/diff from the Vienta, and the rear casing and selectors from the MR2 Turbo. The Vienta bell housing has more bolts that line up with the 2GRFE, and the taller gearing suits the 2GRFE but of course the Vienta rear casing has the selectors on the wrong side. Hence the MR2 Turbo rear casing fixes this. However, as the Road and Track write up says, you can't just simply swap the rear casings. You need to adjust the pre-loads on the diff and output shaft by using different thickness shims.....a bit of a long process. The 3vzfe flywheel just needed machining to clean up the face and it bolted up to the 2grfe. I later sold the rest of the Vienta to the scrap metal guys for $250!
Heatshields :- I replaced the standard steel shield with DCI SheetHot 400 aluminium. It gives a lot more room around the motor.
Exhaust :- 2 inch merging into 2 1/2 inch through a 100 cell cat, and a Magnaflow universal muffler. Quieter than the original OE NA muffler at cruising speed, but a good growl when you sink the boot. Pics attached when we were tack welding it up. Note there is no O2 bungs in at this stage
Serpentine Belt - this is whats running on my motor - someone might find this number useful : Gates 7PK1580