1992 Dodge Dakota 5.2 Magnum advice

I have a 92 with about 300k miles
355 sure grip
tow a lot
MP heads (blowout at the dealer when stepfather cracked the stock ones driving to the next exit with no water)
can't make the MP computer work on california Gas
Maremont Motorhome 3" in and out turbo mufler- same size as the cat
Transgo tranny kit plus dieselized with straight cut gears and more plates etc
half inch cooler lines and big cooler
my advice
get your tune lined up before doing anything to the motor ODB I is tough and expensive
let me know what you find as I have not looked in years
cam advice was right on go bigger and the tune and exhaust only moves the rpm range up, kills the low end and chokes the top end
long term 5.9- I have one on the engine stand)
1.7 rockers are not worth the money and you have to dial in the geometry to really make them work PITA
that said Jones inverse radius cam designs work best for HR
converter
I run braised and needle bearings (B&B)and have low stall and high stall low stall works best with stock cam
make your trans bulletproof before adding power
later trans use 47 guts 92-93 with the smaller shaft use the diesel parts
use only genuine factory or Dana Spicer U joints
only ones with real deep case hardening/ heat treating no fking electro or flame "hardening"
I run the service bulletin fan clutch and 9 blade fan but am going to try the GM 11 blade fan (more blades and less pitch is more efficient and quieter)
I also have an electric pusher (makes the AC work better in stop and go traffic)
radiator is out of a 73 New Yorker and AC Condenser is from a Dual Air MaxiVan
get your traction nailed down so you do not tear up your drivetrain and chassis
I've tried the kegger mods but they are counterproductive for towing
If I changed cams I'd go same or shorter with more area under the curve/ more lift and clean up the heads some more I did pocket port and good valve job on the MP heads Viton seals
92 great motor/ tranny/ truck when done right