all xr3is.i think the box and shafts u have will fit,but the rs2000 box is stronger and ul need its bigger brakes as the vans wont be good enough to stop u ina hurry.dunno bout the fuel pump as i didnt have to alter any of that on the cars i converted.id say u cud use ur diesel tankand get an inline elec fuel pump like a facet one or sumtin.id give darren a ring in jdmotorsport as theyve done quiet a few and they had a van they wer gona convert heres his number hel answer all ur questions 07986038231