Ask Ryelou home much he has invested in his setup...
and at 420 hp (better to due at 400) remove the balance shaft assembly, to avoid serious problems (if and when it breaks)...and if you really want a hook up on parts hit up the srtforums, and look under group buys...there was a 50trim kit group buy for a little over 2 not to long ago...but like i said if you are on a budget and want to rape face 1500$ into the car and you can easily beat the average big turbo/stage 3 srt.....