As I may need a rebuild in my Tamora, I'm looking around for anyone selling a 4ltr Speed Six in any condition. Obviously if you have one for sale that's 4.3 and or rebuilt by Power or Str8 6 etc I'm interested.
There was one on ebay when I last checked. Just google "buy speed six engine" and it should come up. Additionally, one of the Sagaris's for sale in the PH classifieds is being offered with two spare engines, so the seller may be prepared to offer the spare engines separately.
I may consider selling my engine as am considering an alternative engine. PM me how much you'd consider paying. Its an early 2000 engine with 23k and one follower and cam lobe with a mark on them.