What steering box are you using? I am using a Vega box and thus I used an oil filter relocation adapter, as shown below, on the 5.0 HO SBF in my '27 RPU. Didn't really want to, but I really didn't have an alternative, other than running a SBC.
Initially I thought I could use a 90 degree filter bracket, that ended up interfering with the Vega box, as shown below.