seen er ti 2 (pure) for $73.25 - about 35 quid per pound. If i built the frame out of mild steel it would way about 80 kilo or 170 pound. ti is 40 or 50 % lighter so 80 lbs @ £35 is £2800. This figure aint exact but it cant be that far out. If i can do the frame for that i'll be ecstatic - i'm putting a brand new engine in it so the ti wont be the biggest part of the equation but could be crucial to the cars overall weight.