2000 3280RL furnace model and specs????

[Wolfwalker]

We live in our fifthwheel full time. Want to upgrade the heater for better output and more flexibility. I cannot see the black tag at all on my heater and was wondering if anyone knew for sure what model number and specs of heater is....Thanks in advance.

[Wolfwalker]

Also, I do know it a suburban 'SF??' have the owners manual but it covers like 6 different models...