anybody ever try this in their ATX SHO? i had a 1970 mustang with a c4 tranny and it was real lazy when it shifted and after i put one of these in it would chirp 2nd gear. i set it up in the heavy duty mode but i always wondered what the street/strip mode felt like. jegs sells these for my '94 for $72.00. i think i,m gonna give it a try when i have the trany flushed and synthetic oil put in it. TIA