There are many engines having wet liners , a slide in fit sealed with O rings only . Very fine motors .
Looking back at Vincents Glory Years , all those records were set worldwide with original pieces just as drawn in the old Parts Books . Nothing not designed by PEI in his prime . Black Lightnings , breathed upon Shadows and Rapides. , all based on the factory production pieces ordered from Bellville or the Works . The knowledge already existed , proven technique . Little reinventing was necessary beside a few bucks and a good tuner . Or a new Lightning .
So many I've known tried to reinvent them , tried to " improve " on things . Mostly unnecessary and unsuccessful . Sid .