im not the best person to ask TBH i dont know much about em...

wiring's about 5-10wires to be joined... ive been told its piss easy but not done it myself.

tuning options there are a few, but they aint cheap...

personally im sticking to filter, xorst, chip and some nitrous and probably not takin it further

carbs yes seen a few with tripple carbs on the top. aparently they make awesome power like this on a stock engine

not for me tho, i like my EFI