Rene, I installed Rhodes flat-tappet fast-bleed lifters in my modified engine in 1992- not for performance, but so my Ford/SVO camshaft (p/n M-6250-A341) would retard enough to allow the Pantera to pass CA smog testing.... which it did, in spite of 10.5:1 compression closed-chamber aluminum heads. The same Rhodes lifters are still in the engine today. Rhodes offers the same specs in a hydraulic-roller lifter, too.
BTW, my Ford-sold hydraulic cam is pretty mild by today's standards but it did improve power- and reduced fuel mileage by 2 mpg at cruise.
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