What would you do?

B with inexpensive Pypes kit. Also look here:
http://waldronexhaust.com/cart/index.php?cPath=61_36_125
FWIW, the hi-po manifolds are only good for 5 hp at most. Not worth the expense in my opinion for your intended use.
Nice car!


Yes, they (Waldron's) can match/make front pipes with your manifolds and then you buy the right hangers and you are set.