30” X 16” That looks like a big nice horn. 64 questions:
Are you using them at home?
What BSS unit do you have?
What speaker compliment is under these horns? Like 15’s and subs or?
How tall is the vertical gap at it’s smallest point in the horn? I can’t find a picture that shows well enough to gage by. Looking at the polar response measurement Peavy shows and the pictures I can find I can’t guess.
As you have likely figured out, JBL made three different super tweeters with their ring radiator motor, the 075 / 2402 bullets have a 40 degree conical dispersion, they are spot lights for sound and in sound reinforcement they are used in arrays to horizontally spread the sound.
The 077 / 2405 has a different phase plug and diffraction wings added to make its dispersion pattern 40 degrees vertical and about 120-140 degrees horizontal. This most closely matches your horns dispersion patter and IMO would be great used singularly in a home environment with a horn like yours.
The 2404 has a 100 X 100 degree dispersion pattern. In some environments this can be good but in a home listening environment it will put sound energy on the ceiling and floor and may or may not be how you like to hear.
I forget the part number but Peavy made a near copy of the JBL 2404, if you want to keep it all in the Peavy family.
Barry.