i need help w/duster engine

i have all the patience i need...the racing season is over for me..
the car is in the garage just setting....\
I know my dad....he is busy running a business and dealing with my brother.
if i wait for them to get around to it....it will be summer and my car will still be setting right where it is right now.
The rep from Doug Herbert said these lifters will drop in with no machining..
should i not believe this....?
My lifter bores are indexed and bushed....but they are not oil restricted...
that should take care of it....if not..i need to do more home work.
(which by the way i got a ton of already....plus volleyball practice)
i am gonna order the checking springs..but my brother will have to pull them as i he's got more muscles...
i only need to do #1 piston hole right...?
just pull/keep the pushrods out on the rest...?
Mel..