84 454 question about i.d. of my motor...HELP!!!

[84scottsdale454]

Please help, i have an 84 scottsdale 2wd that the previous owner put a 454 out of an rv in it! how can i tell what generation 454 do i have? id like to make it a truck i take out on the weekends and dust some mustangs and need some extra horsepower! any help with these 2 questions? the truck has headers, x pipe exhaust,along with an edelbrock carb and intake!

[royo]

Back of block . drivers side above where trans mount is . they be some numbers there  on the block

[84scottsdale454]

will i be able to see it if i crawl under my truck with a flashlight?

[topp]

No because it's on the top side of the block.   Look down between the firewall and the drivers side head....