All things considered I think I will step down to a Stump Puller Cam , I will try to find one used since everything seems to be back order now.
If I cant find the cam this winter , I may either have to "settle" for a Solid flat cam. ( opinions welcome on which one to pick)
Last option will be to either leave the rebuilt 350P in it or swap a stock rebuilt W72 400 I have sitting in the corner or the shop and postpone the 461 completion to next year.
Peter