The Trick flow TFS-61602003 hydraulic roller used in their 620 HP, 240 head build 446" engine is 243/247 @ 0.050", and 0.600" lift with 1.5:1 rockers.

The parts I have gathered for the Jensen Interceptor, should make about 600 HP, and hopefully almost fall together without any extra/special work?

I have a similar sized Lunati 40230732 solid roller 243/249 @ 0.050", 0.578"/0.585" @ 1.5:1, but I am running 1.6:1 rockers (0.616"/0.624").

I am using the Trick flow 240 heads with the roller valve springs and Ti retainers. I had these checked out, and they were good to run out-of-the-box, and flowed as advertised.

I have not removed the original 440 engine to know what overbore it will need, but I think it is untouched, so I think a 0.030" overbore, 4.25" stroker kit with dished pistons. Most likely a 440 source 505" stroker kit with the 27cc dish pistons (9.9:1? compression.)
I will get the ARP2000 rod bolt option, not sure about the light-weight crank option?

I might also get the 440 source main girdle. Not so much that the engine needs it at this level, but I want to use the Jegs molded windage tray/oil pan gasket, and the 1/4" spacing of the girdle will make fitting the 4.15" stroke version of the windage tray easier. I have used that molded windage tray on the 505 in my '69 Coronet, and had to tweek it to fit without the girdle.