Here is the Top Spacer Plate. I think you can do 3/8" thick and still have enough threads left with the stock bolts. I put longer studs in my Daystar top plate, so maybe someone else will chime in to verify.
And if you wanted to make a strut spacer to put in your existing front shock/strut assembly, make a couple donuts with a ø3.050" ID and a ø4.310 OD. You could probably go 3/8" thick on the donuts. Then put one between the top plate and the rubber spring isolator, and another between the shock's spring support plate and the spring isolator. Would put more pre-load on your spring, so it would bring you back up while you save for new springs.
