The new leaf springs arrived today. Dayton Spring 80-335 was on back order all over the country (this is the 1970-81 Trans Am specific leaf spring with 4 leaves). I was able to order them through Stengel Brothers Spring in Pennsylvania. They had them on sale for $104 per side. Rock Auto just got some in and they show $145.79 each plus shipping. I was able to pick up my springs directly at Stengel Brothers and save the shipping costs. I bought this same set five years ago for my 1972 black Formula and the car sat nicely with them.
http://www.stengelbros.net/80-335-Po...y-_p_2927.html
Now I can replace the old, worn out 5-leaf set up in the car that had too tall of a stack for the perches on the 1980 T/A rear. The lower shock mounting plate got all bent out of shape from being tightened around the 5 leaves. Luckily I was able to use my hydraulic press and get them flat again.