| I look at it differently than just a peak hp difference .  Any cube increase will help spool the turbos and promote more torque. . Match porting the chambers to bore size allows for proper deshrouding of 1mm OS valves.
 89mm  is custom so you can choose what ever comp you like .
 but again block choice is important
 3.2l stroker is definitely not worth the ridiculous price tag but I'll take a 3.1l for only an extra few hundred dollars towards  custom pistons ..
 
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