I'm glad to hear that the 2800# springs work. I opted for those on the scamp after seeing the 001/002 springs on a duster. I didn't care for the buckboard ride.
At the recommendation of Dr Diff, I even have them on my 1970 E-body, with an aluminum headed 493" RB along with an aluminum intake, water pump housing, tube headers and a Passon 5 speed. It still has to be close to 3600+ lbs. They are perfect for that car too. It's never ridden so nice either.