Sure love to know what Suffix is on the block of this Motion added L88!.
Being it was built when you could order an IT Suffix block without Vin stamping through GM parts, could it be?.
Also considering this car is a '68 and the fact it may've been ordered from the get-go w/ plans to add the L88, there's a remote chance it could be a 9737 car!.
Remote chance yes but just for fun why not look to see if the TT happens to be an MM style?.
Couple o' long shots for sure but a fella never knows unless you dig deeper and take the time to L
K!.
~ Pete
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I like real cars best...especially the REAL real ones!