you can get a product called soft seal in a pressure can stops rust from  moisture easy to clean off used to protect lathes etc

you will have to grind bellhousing for clearance if you are breaking grey clutches fitting stronger clutch will make weak point the gearbox which will fail if driven hard

you dont need hardened seats for a grey motor save your money

yes but with falcon bosch no welding or changes to original mount is needed as with 2 legs line up of belt running true is easy as it uses original bolt line alternator is suported each end  less work

ea falcon bosh or xf just use a spacer beetween original rear mount and longer bolt remove front mount from block and use a shorter spacer or some washers use belt 11a0915

dont run alternater through amp meter what you do is the main feed wire that is on starter motor with battery lead the smaller one  not the one from battery cut this wire so you have two ends  one still on starter motor one goes to inside car make these longer to reach gauge one each side of meter if it shows back to front swap leads around so what you are doing is putting meter in this line    hope this is clear enough

make sure detent spring and ball is fitted to reverse lever very easy to  misplace  if this is fitted reverse cant engage without force on linkage

what engine are using the cheapest way to do this use motorcycle throttle bodies kawasaki zx 1200 ones are good and adapt to manifold to use a computer system to pulse injectors other than batch fire is expensive would look at megasquirt site for ideas just google megasquirt

have you tried a genuine holden oil filter, aftermarket ones  let oil return to sump,as oil pump is higher than sump, poor one way check valve

check top breather is not chocked up