Have you tried Carole Nash? I had a 'modified' multi bike policy which included the chop with hardtail frame and bits from all manner of bikes. Didn't have to list any mods for any of the bikes (I think I had six on the policy), they were all insured as 'modified bikes'.
"Y mae dafad ddu ym mhob praidd" 1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
