The boss' 3.3L revs to 7500 no problem and makes good power there too. Of course it helps to have Webers, race exhaust, Web 120/104 cams.
Nonetheless you'll get a peppy engine. The 3.3L we have is similar to yours with a stock SC crank balanced, stock rods balanced w/ARP bolts, EBS valve spring kit, ported heads, JE 10.5:1 pistons and LN 100mm Nickies. Close ratio trans helps it rock & roll pretty good too.
https://vimeo.com/14703417