also what year 240 is it going in mine is a 95 240 (s14 type a lights) your easiest way of getting an rb into your car would be the rb20 its a older but still pumps out 210 on the crank so about 175-180 on the rear but that can easly be mod'd to get over 300 350just need to know what you want to do also parts for the rb20 are still available over seas since any of the rb series engine are still quite popular swaps. also jun and i belive hks have a 180sx (89-93 240sx here in the states) powered by an rb26dett and what ive heard that required a little more cutting then rb20 but not much. oh yeah as for traction its not that bad when i turned my bost to 16psi i had problems but i just turned it down to stock which i think is either 12 or 14 and was fine just had to get some better rubber. at first i was using the bfgoodrich g force then i just switched over to MT so if you need any answers about the swap just gimme a message