Doug Herbert Solid Roller in stroker small block?

Ive been doing some research on different ways to go for camshafts and have found that Doug Herbert's Solid Roller cams are a bit more affordable than comp and the other brands around. Anybody have experiance using their camshafts? Also using thier roller lifters, what modifications will I need to do to make them work in my 67' 318 block?

This is the link to the cam Im looking at..

http://www.dougherbert.com/index.php?main_page=product_info&cPath=83_84_87_658&products_id=9839

Thanks. RD

I've been looking at their stuff too, hear good things.