Engine Build For 1970 Duster
Thinking out of the box some....
Trade LD340 for Edelbrock RPM plus $200 net after all shipping costs. Same performance and you could spend $200 toward reaching your goal. Versus trying to impress someone with what's written on your intake.
Then cc the head.
Then check how much you could surface the the heads with slight ovaling of intake bolts to get to 9.5 compression. Make a business decision whether to surface heads
Spend ~ $275 on cam in range of Comp XE268, Lunati Voodoo 10200703 .... or spend a little more and give Bullet Cams a call to see what they suggest off the shelf and have piece of mind on the quality and the cam decision.