Ive driven and worked on many 240's.
Im partial to the KA as you can pick up anothere motor for a couple hundred, and build it up for alot cheaper than an SR and the block is much better for abuse.
Ive done MANY builds on KA's and a few on SR's.
the SR is a great choice but its a costly one and i have netted a hair over 500whp from a KA that was not even pushed to its limits with regards to modifications.
Ive also pushed an Sr passed 500, and it seems easier to get it there but more expensive for parts and such.
there both reasonable options, but i like to play with whats aready in the car, im not a big engine swap kind of guy. Unless were talking about a 20b
