Solid Roller camshaft selection those of you running a 408 race application - lobe seperation

Looking to install a new camshaft in my 408. Trickflow heads cnc ported, molnar crank/rods/icon pistons 12.25 to 1. Current cam 287/301 660/660 lift with a 108 lobe seperation at .050 254/268 and .440/.440
3350lbs Duster with 430gear and 29” tall tire.

Curious what everyone is running and which lobe seperation they find or found works best.

Thank you