There are a few around, the question becomes what you're using it for/with and what your system is looking for, voltage-wise.
There's also a 3.5 bar out there too.
http://www.iapdirect.com/product.php?productid=42042
dont know if it will work, but you could call them.
x2 how much boost, and how?
Looking for A friend, he is running A 532 CI .BBC in A "93" Mustang. With A Big ASS blower on it, looking for 38 PSI of boost. Needs A 4 bar to get that high.
AJ...he needs a 5-BAR MAP sensor.