Budget 340 Upgrades

If the bottom end is good and passes the leak down my plan is to get the
Mopar performance Aluminum heads p5153849
a new cam, roller rockers,
and Peformer rpm intake.
I don't want to change the converter and this is a street car only.
Will these heads work well with the stock pistons?
Is a roller cam worth the money.
Has anybody used the performer rpm cam?

Is the 340 the engine the car came with? The reason I ask is because the earlier 340's have a piston that pops up above the engines deck which would require clearance in the head. Closed chambered heads will not work.

The MoPar heads you list (part number wise I don't know what they are, I'll have to lookater myself as to the exact head it is.) can be Edelbrock heads. For the most part, you can do better than a MoPar head, for a street vehicle. Race wise, there hard to beat.

IMO, contact MRL here on the board and speak to him about you head and cam combo personnaly. Mike is a pro engine builders. He can set you up with a set of heads all ready done and ready to bolt on combined with a cam that fits into your perameters.

A new cam, roller rockers & intake are great and easy upgrades.

Considering that you do not want to change the torque converter, your limited to cam size. The stock cam is a decent size cam. The RPM cam is OK. But it's duration would require a converter change.
The problem with a roller cam is the expense vs. power return on low powered vehicles. Yes! You'll make more power everywhere! But the cost is expensive.