HIPPO lifters necessary? rev kit ?'s

title says all. the MANY lifters that are out there and I can't narrow it down. HIPPO, non-HIPPO? does it really matter? my engine is an {in progress}496bbc. also, can anyone tell me the difference between the lifters with the roller partially covered, vs. the ones with the roller completely exposed? last thing... i would like to use a rev kit for "just in case" purposes as this is my 1st build, w/ hydraulic rollers? not going to be a track car. probably will never see 6000, so my question is, will a rev kit help or not? if so, which rev kit brand is most reputable? as well which brand of hyd. roller lifters?
i am completely new to this engine building scene so i am absorbing a lot of info... thanx in advance!

there is no need for a rev kit for a hyd roller for lower RPM . hippo roller lifters?never used or seen any in hyd roller but used many with solid cams.the pro max may have some added pin oiling has thats a hyd roller lifter that can take 200 lbs and 500open but i do not know how your going to get lifter valving for a hyd roller with added holes drill in the lifter body there is not the same load on most hyd cams for spring pressure like a solid were you need the hippo lifter . if you thinking about a hyd cam and you going past 5500 all the time then you may what to re think a hyd or buy a steel core hyd cam .buy short valving hyd lifters and you can buy a rev kit.i have built many bbc hyd rollers with out rev kits but i tell customers to stay under 6000.if its going past this then its a solid roller cam .with hippo s

thank you Sir for the reply... any info on the differences {if any at all} on the rollers that are partially hidden versus the fully exposed kind? or is it just cosmetics?
these---> High RPM Hydraulic Roller Lifters - Lunati Power
vs.
these---> Comp Cams 853-16 Comp Cams High Energy Hydraulic Roller Lifters

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Originally Posted by 496_blockhead

thank you Sir for the reply... any info on the differences {if any at all} on the rollers that are partially hidden versus the fully exposed kind? or is it just cosmetics?
these---> High RPM Hydraulic Roller Lifters - Lunati Power
vs.
these---> Comp Cams 853-16 Comp Cams High Energy Hydraulic Roller Lifters

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the stock oem you see less roller then some of the retro.s i used the speed pros and many of the morells /ersons not everone makes there lifters so there alot of just sticking other name on a new box i not a big fan of comp lifters some of the sheild on some roller not all. has to do with were the oil galley is and how far and were the lifter is setting at the base cirlcle and it full lift more window around lifter roller can help with smaller base cam