so yeah, 500 may be a little low, materials to preheat and post heat, 3/16 lh inside and out and it takes me 2hrs. plus sometimes a helper to pre and post heat and line that heavy thing up , oh yeah almost forgot they also want me to pressure test with nitrogen. i need to get the setup the reg is 350.00 alone which sucks is there a testing fee? thanks again you guys this site is great! shannon