Ive got a 350 bored .30 over, the heads on it right now are (off of mortech)
casting number: 3782461....64-66...327......Camel hump,no accessory holes,160/62cc port volumes,62cc chamber

The heads have been ported and polished but still have the original size valves, 1.50/1.94. My question should i have a shop machine the heads for bigger valves or should i just find a new set of heads. Take in mind the setup they will be on is a Twin turbo setup

Find a new set of heads. For twin turbos you will need -
Hardened Exhaust seats
sturdy castings
bolt holes on the heads for all the brackets and accessories

and given the expense of turbos, why spend the $$$ on the turbo system to make power then restrict it with a poor choice in head selection.
(yes they would work, but why bother?)

Ive got a 350 bored .30 over, the heads on it right now are (off of mortech)
casting number: 3782461....64-66...327......Camel hump,no accessory holes,160/62cc port volumes,62cc chamber

The heads have been ported and polished but still have the original size valves, 1.50/1.94. My question should i have a shop machine the heads for bigger valves or should i just find a new set of heads. Take in mind the setup they will be on is a Twin turbo setup

I thought the original valves on the -461 were 2.02/1.60???

461
2.02/1.60 valves, a 64cc chamber, no accessory holes, intake port volume of 161cc, exhaust 62cc. if you have an X after the last number you have-64cc chamber, intake port volume 172cc, and the exhaust port was 62CC's, valve sizing was 1.94/1.50

If you have an "X" after "3782461" then you do have 1.50/1.94. Otherwise, you already have the larger 2.02/1.60 valves.

Sorry, but that is incorrect. The 2.02/1.60 valves were used in the 350 horse and larger 327's and aren't all that common any longer.