Just for fun, because I felt like and had nothing better to do (actually I had, but I needed an excuse to postpone some duties) and all other amateur reasons, that sound so silly in GM ears, I have tried to revive the Morra Gambit in some variations, which were causing trouble.
Now it is my opinion, that 6...a6 is met best with 7.0-0 Nf6 8.Bf4
a) 8...Bg4 9.h3
a1) 9...Bxf3 10.Qxf3 e6 11.Rfd1 Qa5 Allahmehzadeh-Jens, Hengelo 1996, 12.Be2 (maybe even 12.Bb3) Ne5 13.Qg3 Be7 eg 14.b4 (14.Bd2) Qxb4 15.Rab1 Qa5 16.Rxb7 with decent compensation.
a2) 9...Bh5 10.Qb3 e5 (after e6 11.Qxb7 White is better off compared to 9.Qb3) 11.Bd2 (maybe 11.Bg5 with a similar idea) Na5 12.Qa4+ b5 13.Nxb5 axb5 14.Qxb5+ Ke7 (Nd7 15.Bd5, Qd7 15.Bxa5 Qxb5 16.Bxb5+ +-) 15.Nxe5 Qb8 16.Bb4 Qxv5 17.Bxb5+ unclear. It is a pity, that the queens are exchanged, but two connected passed pawns and especially the lack of harmony in Black's camp offer compensation.
b) 8...e5 9.Ng5!
c) 8...e6 9.Qe2 Be7 10.Rfd1 transposes to well known lines, while 9...e5 and 9...b5 10.Bb3 e5 are met again with 10(11).Ng5.
All these efforts to not change a bit to my general opinion, that on patzer level the Morra Gambit is impractical. The last count netted no less than 10 more or less decent defences after 3...dxc3 and at least 4 playable ways to decline. For Black of course only one suffices.