Trade-a-plane.com has some nice summary performance specifications on a
large variety of aircraft, but I am looking for the performance specs of
a Cessna Turbo 310 R with a Ram Series I (300HP) and a Ram Series IV
(350HP) conversion on them. In particular, I would like to know what
their Rate-of-Climb is and what their 75% Cruise speed is. For a normal
T310R using TSIO-520-B (285HP), listed cruise is 222 kts. Rate-of-climb
seems to be absent form the trade-a-plane spec, but the single engine
ROC is listed as 390 ft/min. Any pointers would be appreciated.

-Sami
N2057M, Piper Turbo Arrow III