Since you got some parts money : Mopar Axle Package 5 X 4 1/2" (5 X 4.5) Bolt Pattern 30/35 Spline or call Contact Cass would be the person who would know. Says will be back by May 5th.
Those heads have a smaller chamber than the 360 heads and will raise your compression. Since they are ported they should flow good enough. IMO, I would go with a bigger than stock cam to avoid pinging and putting that higher compression to good use.
This is what I was referring to-
http://www.forabodiesonly.com/mopar/showpost.php?p=1969455218&postcount=39
I apologize, didn't mean to offend. Excuse me while I remove my foot from my mouth. 8-[