Low Mileage Hydraulic roller 360 LA and $1000.00- what would you mod?

I am taking on a small project for someone. Low mileage 89 360 out of a truck. He is dropping it off and 1000.00. Motor runs great but want some performance increase but it will be a daily beater and will retain HP Exhaust manifolds which he has now.... Fuel management is a Holley Snipe and MSD ignition.

The only other thing he is bringing is a set of low mileage 915's done about 10 years ago.

So what would you change? If he sees anything near 300hp it will exceed his goals....

JW
Shop the classifieds for a good carb and cross the fingers for a reasonable cost intake. That’s the big expense.
Cheap Headers, cheap mufflers, 2 straight pipes, clamps, adapters & hangers. End it at the rear axle.
Pace Performance ready to run Distributor (inexpensive)

Upgrade cam later.