Or just buy the engine and.....
http://www.alfa75.info/id553.htm
Although it's not strong enough to pull your tank

Barry wrote:Mats,I beg to dis agree with you..Crash regulation forced the designers to add bigger more bulky pillars to the car to comply with the regs..This had a resultant knock on effect of bulkier and thicker pillars where it unwittingly obscured vision and added lots of weight to the shell.
Obviously this would be short term as youve indicated.Throw them a curve ball and they all come firing back.
They then look at the poblem and come up with the better mouse trap as VW did.I agree,things are evolutionising..and we might see ubber strong pillars of neglible size in the future...But that is the reason for the over weight bodies at present....
Look at any new or newish car and compare the weight with an older mode..
Alfetta gtv....1100 odd Kg.
Alfa 156 v6...1360 Kg
Race gtv6 here..746Kg
Race 156 here...1090Kg
The parity is there..