TTI Shorties in an Early-A?

I need shorty headers in my ‘65 Valiant for ground clearance; their website says that the shorties are for ‘67 and up so I called them and asked if they know if they will fit a ‘65 and they told me that they “weren’t designed to fit” and if they knew of anyone who has tried and they said no.

Does anyone where know it the shorties will fit an early-a and if not what the issues are? Thanks in advance!