Yes the 3mm would require no trenching but we have been seeing a few failures with these. The case trench is $175 for the 4mm if you send just the cases in.
but he is planning on running drag and stock class u can have exhaust and jetted but thats it... in modded its basically unlimited that means banshees with 10mm stroker =(
so i was wondering with the 3mm stroker will they beable to know i have it?? if they dont he can still run stock class =D
You do not have to run the spacer. We can build a sleeper motor that has a stroker and sink the head to hide everything but, when you start it up and run it only an idiot will be fooled that it was stock.