i received this email back from jason at www.paracing.net and i feel better:

the worrys about chromoly be streetable you would have no worrys on our products due to the fact that i don't use a very thin wall tubing as most do i use no thinner than .095 DOM tubing and i can promise you will never hurt a C/M peice with every day abuse, we've tested and beat it for yrs with zero failures. As for the coil overs i perfer them just for the fact you can adjust ride height from +2 to -4 with ease in matter of minutes plus changing
springs is far more easier and they make a wider range 95-400lb rates. For the a-arms we have made them both ways and both work and hold hup to strength test more than average person can put them thur, it just my thought to the ones i sell as being the better looking of the too..i also use the same style on my own car and it runs quite fast(7.90 1/4 5.18@142 1/8th)on small
28x10.5 tires..just a thought..we like to test our parts too with the best testing available..The racer...If you need more info just let me know i'd be glad to help.

Thanks Jason