Anything is possible with enough time and money
No
I don't believe so.
no. you cannot change bolts rifle to rife without being head spaced. even if they fit you never do this.
700 ADL Long Action
no there are some minor adjustments to the safety area
yes a BDL rifle will fit a ADL stock but the trigger guard will not but a new trigger guard can be bought for 20 to 50 dollars and brownells.com
Assuming the Remington SPS Tactical you are referring to is chambered in either .223 or .308, yes the SA (Short Action) stock will fit.
700 Hands down! The 770 is a cheap version with plastic parts and without the fit and finish. If you looking for a cheaper alternative to the 700 I'd go with a Savage before a 710 or 770. The 700 is a gun you can have for a lifetime and hand down, I wouldn't put the 770 in that category although it is still certainly accurate enough.
I have 26's on my stock 450 and they fit fine and it gave it 14" of ground clearance, i think stock is 10.5
No, you can't fit anything higher than 700 mb if the device is 700 mb
On a post 1995 stock Buell, no, a Sportster air filter will not fit. On the older tube frame Buells, you may adapt an air cleaner system that will accept a stock Sportster air filter.
No, a Marlin 881 stock cannot fit in a model 81. The stock would fit an 881, not an 81.