Thanks guys. Yea I'm stateside
Bald. . .yea I'm still thinking modern era on exhaust

hehehe. I was curious how to run the exhaust. I understand when I had the LS1 in my Trans AM, I had to have some sort of back pressure. I was unsure how to handle this on an inline 6 or if it's needed at all.
So I really don't need a x or y pipe after the headers? Just run them straight to the rear if I wanted a dual exit? Was thinking flowmaster or magnaflow mufflers to the exhaust.
Seiscanecos. . .thanks for that piece of information. The only place I found parts was cliffords and stovebolt ofcourse, but are primarly simple bolt-on parts. Internals, etc I found PAW however only cast pistons. Could not find anything forged.
I will look into PES and Sissel's sites and see if I can find the other products from them. I do plan to choose the 250. I want something pretty simple to install and if I can achieve the same goals with the 250 as I would with a 292, then I'd go this route. Seems with all the changes that would be needed for the 292 to be installed would nearly amount to the same work needed for a small block V8 which is where I want to stay away from.
So the Chevy 307 V8 pistons are the same in size as the 250??