Nht 2.3 speakers

After days of trying to get correct replacements on these 1991 speakers i hastily ordered 4 replacements that i'm not sure will work right.Speakers are the lower 2 6.5 rated at 30 -200 watts 35hz-25khz @86db.After i ordered the 4 a tech from parts express finally responded with what he thought would work problem was diameter was too big for cutout.I really don't know much about speakers but 4 i have coming were mid bass and the 1 he chose was reg .woofer.Question is will the mid bass be compatible with crossovers and tweeter?Nht doesn't even care or recognize they have this model and info is scarce.Oem # is 11-007-01 other #s are 4693 4137m.I like the style of enclosure and really want to bring these back to life.