Yes the lb9 is a 305 and the l98 is a 350, The i/o and netress are the same but the knock filters are different and yes I have speed density ones. I have a new axxb reprogramable one. You can still buy this but its a otp acdelco 16163062. I have a Axxf, Atnx, Axyc,Awfz, 2 of the Anjf, Axcp, and 5 new aujp's, tpis reprogramed l98 vette memcal, Hypertech memcal corvette .bin and knock p/n 121381.

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