I had the 7 leaf on my 4 seater. Changed to the 4 leaf and has transformed the ride quality.

Fitment was not without issues, but very pleased with the result.

"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10