Small block to big block trans cross member doesn't work after swap?

U may also have a truck mount bolted to ur crossmember and I believe they are a little taller than a car mount Kim
I agree

As an example;
My 68 Barracuda is wearing a 73 up spool mount crossmember. On it, is a long-tail A833 which has the same trans mounting point as any pass-car 727. My spool mount is shorter from the trans mounting-surface to the bolt-tunnel, than yours is.