Originally Posted By 590 Challenger
25.3 book only shows the 25.3 spec. Yes it calls out every mandatory bar, dia. and wall thickness. 25.3 is not that much more work and it's a little heavier and safer. I think 25.5 you have a choice of mild or moly where 25.3 is moly only and has to be tig welded

So the 25.3 just shows the add on bars to what? 25.5 or where does it show the whole frame concept?
I would do moly so tig is no problem. I bend and weld my stuff so I can conform to my size. So should I get the 3,4and 5 to lay a good foundation and build up from there?