Right this is a Serious possibility for me over the winter with my toy

If i was running a car with an engine in the front, and an engine in the back, how well balanced would each engine have to be with each other, ie BHP / Torque, so not to try and rip the car apart or one engine 'carry' the other?

Also with the gear linkage been permanantly joined together, ie both boxes select gears at the same time, if i was to only run ONE engine, could a line lock on each hydraulic clutch pipe be sufficient to keep the un driven engine's clutch dipped? or would this kill the release bearing in no time

Would it be possible to map each engine on the rollers to within say 5bhp of each other

Cheers for any info on any of the above and anything i may have overlooked

Bri.