351 heads users...lots?s also

[ren65]

Can you 351 head users give me a hand?
Ive got a pair of rebuilt 69 heads,Do I need machining for guide plates or is this just for late model pedestal type heads, different machine shops keep giving me different quotes on tapping my heads for screw in studs saying that they also have to mill my stud pedestals for guide plates,there is a pedestal on the heads but they dont look like the pedestals on the late model heads,do I really need to mill them off to use guide plates. I also need to know what Push rod lengths did you guys use for a 302block, roller cam/lifters and the vintage 351 heads with 1:6 roller rockers.I know I should really measure this myself,but I need actual examples from you guys so I dont order the wrong stuff.I also hear different advise on Intake gaskets for this combo,some people say I need specific 351 intake manifold gaskets because one of the shapes of the water passages are different from the late model FI intake.What have you guys used? can you get away with using stock latemodel 302 felpro intake gaskets.Do you also know If I can use a set of non rail type stamped rockers off a 289,are these 1:6 ratios also or will I need to get a different length of pushrods as apposed to the roller rocker set up.
Thanks in advance,
ren65