Check with SCE, I had them make me a bunch of different gaskets( I did RD with them) for the first blown 426 Hemi I built a long time ago, it had a set of Dart cast aluminum heads on it that remind of what yours look like scope
Try calling them at 661-728-9200, they have been bought out and moved out of SO CA since I worked with them, I hope they still have that number working luck
I can't remember the name of the new company in the mid west that bought them out now either blush

Last edited by Cab_Burge; 06/04/20 01:48 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)