I'll have to try find out the details for you. I'm looking at maxxing out my T88H-34D so I figure that would be around 800-900whp.
The kit was a Greddy Type-R kit to suit the T88 direct from Japan. Came in a 115mm and 149mm core thickness. My mate is running the 149mm in his car atm.
Not sure if this helps at all.
Dusty the five row cores were type 27 cores (12000027), thats what Greddy refers to them as. Hope this helps! btw Chiba warehouse is currently liquidating alot of overstock.Greddy does not make a Supra-specific kit that is 149mm thick. Are you wanting to make 1,200rwhp or more? Can Trust Japan give you the 8 digit part number of what you are wanting? There was a 5-row core made but its been long discontinued and was core only. You would have to weld on end tanks and make all the piping as well as brackets to hold it onto the Supra and all adapters to allow for power steering, AC lines, horns, etc.