Im only getting 7 years on fence sections
anything rot proof or mildew proof after 2004 is not.....that is when they quit using arsenic in things like marine vinyl, marine foam, treated lumber, etc.
you can buy a 2-post garage lift for about $2k that has the safeties built in. you do need 8" of concrete slab to anchor it with. a 4-post lift is a bit more.
EFI can't add power, never could. Changing engine architecture does
Your 400 and 283 blocks are old 2-piece RMS motors which is a 20 year step backwards. Useless in this application.
Vortec heads recommended
The 142 will most likely interfere with the marine T-Stat housing. You can't use...
Pour the contents of the fuel filter into a clear container and inspect it's contents for clean and pure fuel
Do a compression test
Check for overheating