I recently purchased a second Autocross car (STU MSM) now classed in AST… so I am contemplating build a “fun” XB car. My main Autocross car is an SSC BRZ that I do well in.

Anyone have experience with the reliability of the Pulsar turbos for Autocross type environments?
most of the autocross builds I see have EFR turbos.

current plan is built bottom end that I have already acquired, and putting a stock spare MSM head on with upgraded valve springs.
turbo setup I have already Acquired a Kraken Manifold/ DP for a T25 and GT turbo downpipe. I am leaning towards using a Pulsar Turbo, but the manifold could also be used for an EFR6258.

not sure I have a power goal, but something in the low 300’s and upper 200’s would be plenty I believe.

So pulsar turbo PSR2860R GenII or spend the extra money on the EFR?