Turbo Optima Mid Special

[DanB4]

Hi Guys,

I've seen a couple of used mids recently ripe for restoration but get confused between the Original Turbo Optima Mid Special:

http://image.dhgate.com/upload/spide...xi171049_4.jpg

and the Turbo Optima Mid with the LWB Conversion fitted:

http://www.rcscrapyard.net/clas_file...Optima-Mid.jpg

with this conversion:

http://imageshack.us/photo/my-images/88/con1c.jpg/sr=1

I think from the original has a different chassis material and no adjustable turnbuckles, am I right?

How do I tell the difference between an original and converted car and if I do find an original how much would it be worth restored?

Cheers,

Dan