Probably old news, but MK's GT1 has been tested and reviewed at the "totalkitcar" web-site.

Review here

Spaceframe?

Only if the finished chassis is better triangulated than the one featured in Kit Car magazine a while back. No diagonals at the front suspension region are visible in the photos and also none across the top of the engine bay or around the rear suspension area. The chassis sides seem to be OK but there isn't much of them visible in the pics. I'd be surprised if the the original book lowcost chassis wasn't a lot stiffer than the GT1 chassis.

lovely bodywork though.

Whent round Donnington in it - want one 'nuff said!

Cheers

Chris