I found them and I think this should be on the first page with all other information.
front springs
Green 2.3 x 4.7
Black 2.3 x 5.0
Red 2.3 x 4.1
Rear
Silver 3.1 x 2.8
Red 3.1 x 2.5
Black 3.1 x 3.4
Great Idea on stretching the springs but ?? can you do that and make them the same or is it a guessing game ? Thanks