Doc, last time I seen that SP2P 440 was about 18 years ago. He had the Iron 440 4bbl next to the Iron 383 2bbl next to the SP2P 440. Yes it was smaller than the Iron 440 one.
I know it was bigger than the ports on my SP2P 318 that we had on a 1965 Dart GT 273 (with ported 66 273 heads).

Just because it had SP2P on it, not all of them had 260Ford-265Chevy-273Mopar size ports.... That would be stupid.

Guess the OP just needs to put a Tunnel ram with two Domanators on his Motorhome. whistling


Retired, US ARMY 1973-1994
ASE mechanic, Electrical 1994-1997
Retired GTE/VERIZON/FRONTIER 1997-2015


Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.

03 Suzuki Burgman 650(Burger King) Scooter
65 Formula S Cuda
78 Little Red Express Truck
98 Buick Regal (wifes car)