The engine combo would love a 650/650 lift-290/290-108 cl.solid flat tappet cam or 680/683-284/288-108cl roller cam.these are with 1.5 rockers,1.6 is even better.We used these cams in many builds.

[IMG]http://i430.photobucket.com/albums/qq21/ajcasini/max_zpsdppwd9km.jpg[/IMG]