Nikasil replating is a very expensive process and only done properly by a few companies. I spec out my customers parts to LNE and the bill is about $1300 through my account with Charles.
DRC supercups in an 05…with larger valves and no flycutting or at least shimmed bases…wat??? That’s not possible, and if you somehow managed it you’re running VTP clearances so dangerously close that I don’t even want to know. DRC GT2-E’s cams in a M64/05 require flycutting, use of RSR pistons, or some seriously sketchy head/base shimming + chainbox mods to clear, and they not that much more aggressive than the supercups.
What valve springs are you running? Solid lifters?
Just saying…