trying to swap ls & t-56 magnum in my 68 camaro , parts I acquired were Holley ls swap engine mounts ,clam shells , and there t-56 trans crossmember and quicktime low profile bell housing . At the time I ordered this Holley acquired DSE, I formed Holley that I have a DSE subframe and was told these will work well they don't !!!! Reordered the DSE engine mounts #060404ds use with DSE subframe , The trans crossmember is Holley#12626hkr the trans crossmember trans mount needs a 1.625 thick spacer to mate to trans mount and the trans cross member after being bolted to subframe the trans mount slots need to come back . I did see Holley makes #71222017hkr ? has anyone here been through the same problems ?Really wish these companies engineering departments communicate.