Comp 995's have their own set of issues,and those issues have been discussed here already a bunch,do a search if you want/plan to use those springs and heed that advice,and with the 995's you absolutely need to check the spring pressures on those springs before using them,or you might just get a unwelcome surprise.
And understand that the current batches of 995's are strictly for 1.700" IH or taller,if you install a set of them @ 1.65" I can all but guarantee the pressures will be way too high for most any flat tappet use.
Comp 995's also require some machine work to fit the pontiac iron heads,and they absolutely must use small diameter VS seal to fit inside them,the OE positive style seals often wont fit inside those springs.
Lunati has a good spring that installs @ 1.65" if that is what you need,part #73949 IIRC.
HTH.
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