I remembered a thread about a RB26 T28 etc and found it here http://www.son240sx.org/forums/showthread.php?t=29048
I’ll assume this is his RB26DETT T28 which isnt any bigger then a CA18 T25
This is also his 2nd thread as far as I can tell… the 1st one http://www.son240sx.org/forums/showthread.php?t=29052 someone chimed up asking if it was his RB26 T28