360 help

With the stock converter i would go no more then either of these, and the Eddy valve spring installed height @1.80" should allow going 1.6 on the rockers if you choose......

Lunati #10200702.....475/494" 220/226*@.050
http://www.lunatipower.com/Product.aspx?id=1544&gid=287

CompCams XE268.....477/480" 224/230*@.050
http://www.summitracing.com/parts/cca-20-223-3/overview/make/plymouth

P.S........

Since you have a Crane now, i'll also throw in the 272......454/480" 216-228*@.050
http://www.summitracing.com/parts/crn-693941/overview/make/plymouth

Of the three, i personally like the Lunati the best for your combo. I should also mention piston to valve clearence if you choose 1.6 rockers. Should be checked, but if your running the stock pistons which are pretty deep in the cylinder i doubt it would be a issue.