[suicideneil]

You need a different firewall...

I'll answer Q2 & 4 for you- the gmaxx chassis will only work with the 3906 tranny. It is possible to modify the FLM mounting adaptors so that the 3905 tranny will fit, but you are limited to rather small spurs due to the chassis rails, so gearing may be tricky.

The Gorillamaxx chassis and suspension (emaxx) is designed as a direct replacement for the stock stuff, so any turnbuckle upgrades or suspension rods/tubes etc will fit perfectly- doesnt interfere with the stock parts that remain after changing chassis. Only issue Im aware of is that the steering servo linkage needs to be mounted in a slightly diffeent posistion due to different angles (revo chassis has angled mounting points). The gorilla emaxx chassis has no such issues.