if you really want to do this then use the x engine, you be able to run lights and the gear ratios abetter suited for a wuad application... havin said that, if youre iffy about the project, save your money and go with 450r... you'll spend half as much and have just as nice a quad except with out the headaches of fine tunning... and get the 450r with the hrc kit... it's worth it...
augusto faria (61% dixie)
05 Dodge 2500 Cummins T/D
03 450ex (crf450r, atvfourplay frame, dsa port, web cam, gibson, axis, pep, houser, lonestar, tag, ims, hammerheads, asv, fmf,white bros, baldwin, trail tech, c&r, alloy boltz, graydon proline, lrd, meier, pro com, quad tech, sidewinder, baja, asr...)
00 426ex (hot cams, white bros, ims, works, leagar, ported head, itp, uni... )
95 300ex (rebuilding...)
04 raptor 80 (itp, white bros, k&n)