[Thread Jack]
Whipple I don't know if you plan on going to solid lifters, but if so take a look at post 98 DOHC H4 Subaru buckets. They're the same diameter and if they're thinner (haven't gotten any to check yet) you could improve valve geometry pretty drastically along with running far more aggressive ramp angles.

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1993 190E 2.6 Sportline