I was hoping I didn't need guides plates, but would install them if I needed to. This being a mild cam the new valve train should be just fine with stock-sized 5/16" push rods. No major spring pressures at all.

292 1966; 3962084 T6G2 Lumped 250 Head 1.94/1.60 gasket matched, mildly ported. LOWEBOY