Drop = Inner Fender Trimming ?

[67'ShortMonster]

How much drop can a person go, on a 1/2 ton 67' chevy truck, and not have to trim the inner fenders.

Getting ready to install my front clip.... Realized this may be an issue for me.
The front is a mustang II suspension / crossmember and the front is dropped probably somewhere around 6" or 7". Suspension is coil overs with about 2.5" travel up or down. Probably way more at the tire though.

Tires are a 255 35 20 and about 27" tall overall. on a 9.5" wide wheel. Not sure on the width of the front... I remember it's wider than the stock mustang II setup, but not quite as wide as standard chevy front clip.

I guess i am looking for someone to say, there is lots of room, and it will be fine....
Otherwise, i will perfit the inners and see how much I have to trim.