Re: lots o mods
Go to your local metal supply store. I just use 1 inch mild steel tubing and I believe 3/8 tubing for the chain stays. When you stretch the chain stays you will need tubing the will fit inside the 3/8 tubing for inserts. Need that for strength. If you are not sure the size tubing you need just take the frame with you that your are stretching and match up the size.