I,ve got britpart on my 88" and they're fine, looking at your picture it looks as though the spring hanger is slightly bent, when you fitted them did you lower the motor prior to tightening the nuts, which is what you should, I didn't and end ended up with the car about 4" higher than it should be and as a consequence buggered the the front prop with too much of an angle which started of as a rattle and developed into a clunk, did you change the shox or keep the old standard ones, I paired my springs up with procomp es3000 ,
Cheers Nick