Yes, All 318 and 360 cop car 4 bbl engines got the windage tray. Chrysler even slotted the holes and superceded them both to one part number after awhile.
I must confess that some days I wonder how some of my first engines ever lived!
As a vo-tech student in high school I did an internship in a Dodge Dealership in the fledgling Iacocca years. There was a 440 6Barrel GTX with a 4 speed and a Dana on the back row sitting next to a 70 Challenger...
Dustin, It is hard to beat the standard 5 pin ecu electronic that mopar performance sells. If you want to trek in the salvage to save money, find a 73 and up truck or car that has a small block and grab the ecu and distributor. Wiring harness is available from Mp or various other sources...
Rollers make sense for them to offer if they want to keep going. I would not want to count on a nitch market of a 40 year old car! I do like the drop in flat tappet solution because you don't have to change anything else. I would probably check the lifter depression when I bolt the rockers on...
Oil v
Oil viscosity can change the rpm that the duration will come back in. Without dyno runs before and after, or time slips...i don't know how to quantify it. My gut tells me that unless your running some 20w50 oil it is nominal impact.