Making a subframe but....

[albertaf4i]

alright i got my tail from germany altho i have a few questions i have to make a new subframe. i was going to use either square or round aluminum tubing but...the stock subframe tubing ends are almost plugged so that where the bolt goes through its not hollow if that makes any sense can you purchase these plugs any where?? or what is the best way to go abouts making a subframe any help would be great thanks

[fimpBIKES]

pics would definitely help me out here mate,
what type of tail is it?

[crazymofo]

if by plugs you mean the lugs that are welded on the tubes of the subframe, which the bolts pass thru to attach to the mainframe?

use some 10mm flat bar 25/30mm wide, lop it off 25mm long, drill a hole, for the bolt hole, weld it to your new subframe. id suggest 25x25/30mm box section with 2mm wall thickness for the subframe tubing.

cheers.joe.